Given: <1 and <2 form a linear pair and m<2=145. Prove: <1 is acute

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

To solve the system of equations below, grace isolated the variable y in the first equation and then substituted into the second equation. what was the resulting equation? 3y=12x x^2/4+y^2/9=1

D. in a discrete probability distribution, the sum of the probabilities for the discrete variables will be > 1. true or false